GGG-C-2794A
3. REQUIREMENTS
3.1 Specification sheets. The individual item requirements shall be as specified herein and in
accordance with the applicable specification sheet. In the event of any conflict between the requirements
of this specification and the specification sheet, the latter shall govern.
3.2 Materials. Materials used shall be free from defects which would adversely affect the performance
or maintainability of individual components or of the overall assembly. Materials not specified herein shall
be of the same quality used for the intended purpose in commercial practice. Unless otherwise specified
herein, all equipment, material, and articles incorporated in the work covered by this specification are to
be new and fabricated using materials produced from recovered materials to the maximum extent
possible without jeopardizing the intended use.
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible, provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
advantageous life cycle costs.
3.2.2 Body. Body shall be of aluminum, bronze, brass, copper alloy, steel, or optional material, as
specified (see 6.2).
3.2.3 Transparent reservoirs and sight windows. Transparent reservoirs and sight windows shall be
borosilicate glass for high temperatures (225 degrees Fahrenheit (°F)) and medium shock; acrylic for
medium temperatures (160°F) and high shock; or polycarbonate for high temperatures (225°F) and high
shock resistance (such as required on an 8-inch gun mount), as specified (see 6.2).
3.2.4 Springs. Springs shall be made from music wire or stainless steel spring wire. Springs shall not
develop permanent set after having been compressed or bent to extreme working limits.
3.3 Finish. The outside surfaces shall be smooth finished. Unless otherwise specified (see 6.2), steel
parts other than stainless steel shall be zinc coated in accordance with ASTM B 633 to resist corrosion.
3.4 Threads. Threads shall conform to FED-STD-H28/7, American Standard taper pipe threads for
general use (National Pipe Thread (NPT)).
3.5 Hexagons. A hexagonal section of proper size to fit a standard open-end wrench shall be provided
on the shanks of all types, except types C and G.
3.6 Leakage. The cups shall be so constructed as to prevent leakage of oil, when tested in
accordance with 4.4.
3.7 Capacity. When capacity of oil cups is specified herein, the actual capacity shall vary not more
than ± 10 percent from the indicated capacity.
3.8 Workmanship. Oil cups shall be manufactured in accordance with this specification, pertinent
standards, and best commercial practice. Oil cups shall be free of dirt, oil, or any foreign matter, except
the material used for preservation. The component parts of the oil cups shall have no pits, rust, loose
scale, chips, scraps, splits, cracks, burrs, or other defects that would affect or prevent proper operation.
4. QUALITY ASSURANCE PROVISIONS
4.1. Responsibility for inspection. Unless otherwise specified in the contract, the contractor is
responsible for the performance of all inspection requirements as specified herein. Except as otherwise
specified in the contract, the contractor may use his own or any other facilities suitable for the
performance of the inspection requirements specified herein, unless disapproved by the government.
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